How to correctly view pulp molding equipment?

2022-09-24 14:17:19

Pulp molding production equipment, referred to as PMP, is a three-dimensional papermaking technology. Pulp molding is a new type of packaging material that has developed rapidly in recent years, and is an excellent substitute for wood. It is mainly used for packaging in the circulation, storage, and transportation of commodities. This product uses waste paper as raw material, and is prepared into pulp with a certain proportion of concentration through pulping, pulping and other processes. It is shaped into a certain shape by the mold on a molding machine according to different shape requirements, and finally dried to form a final shape. 

This product has four major advantages: a wide range of raw materials, waste paper, including cardboard, waste paper box paper, waste white edge paper, etc. can be used; its production process is environmentally friendly; it can be recycled; volume ratio foaming The plastic is small and can be stacked for easy transportation. Pulp molded products, in addition to lunch boxes and tableware, are also used as industrial buffer packaging. They can be used as packaging pads for eggs, fruits, precision devices, fragile and fragile glass, ceramic products, handicrafts, etc. Buffer protection performance.

This technology was pioneered by Denmark at the beginning of the last century, and my country began to introduce equipment for production in the 1980s. Production equipment for pulp molded products has developed rapidly. In China, it is mainly semi-automatic equipment, while foreign countries are almost all fully automatic and high-energy-consuming assembly lines. Since a large amount of moisture (about 55-60%) remains on the workpiece after compression molding, the moisture content of the final product is 12-14%, so about half of the weight of the workpiece should be removed during the drying process of the workpiece. , this part of the water all depends on the absorption of heat into water vapor. 

The drying process has undergone a phase change, and the energy consumption is very large, so the pulp molded products become high energy consumption products. By analyzing the energy conversion process of drying, it is very important to improve the drying equipment and improve the utilization rate of energy to reduce the production cost of pulp molding products.